I was in school in the 80s, and I cannot ever recall being taught about agriculture or food, other than our health teacher encouraging us to eat from all four food groups. At that time, I worked to convince my parents that pizza was the perfect food, because it included them all.
Maybe the lack of connecting school subjects to farming was not because our teachers and administrators did not think it was important, but maybe they thought we already knew how food was produced. I bet most of my peers had a parent or grandparent that grew up on a farm.
My family raised chickens, dairy goats, rabbits, horses, and hay when I was kid. We all know the benefits of our young people being raised on a farm or having farm-related work experiences, and I bet the only negative thing my teachers could say about my childhood was that I was all too eager to explain to my classmates about how we got more baby goats and rabbits. Today, however, our children are three and four generations removed from the farm.